Histograms - Support histograms for Plugins, GPU

content/public/renderer/render_thread.h

Index: content/public/renderer/render_thread.h
===================================================================
--- content/public/renderer/render_thread.h	(revision 139790)
+++ content/public/renderer/render_thread.h	(working copy)
@@ -16,6 +16,10 @@
 
 class MessageLoop;
 
+namespace base {
+class HistogramSender;
+}
+
 namespace IPC {
 class SyncChannel;
 class SyncMessageFilter;
@@ -43,6 +47,7 @@
   virtual IPC::SyncChannel* GetChannel() = 0;
   virtual std::string GetLocale() = 0;
   virtual IPC::SyncMessageFilter* GetSyncMessageFilter() = 0;
+  virtual base::HistogramSender* GetHistogramSender() = 0;
   virtual scoped_refptr<base::MessageLoopProxy> GetIOMessageLoopProxy() = 0;
 
   // Called to add or remove a listener for a particular message routing ID.